The Tidmouth Milk Tanker is a freight car meant to haul milk. The original variant was colored white with blue lettering on the side that says "TIDMOUTH MILK", with a dome on top. The second variant features a picture of a cow on its sides and no dome.
The version sold in Germany displayed only the word "MILCH" rather than "TIDMOUTH MILK".
The Prototype (there are no nails next to the dome)